Deep-well pump and operating mechanism therefor



maamz Filed N 12. 13 719122 2 Sheets-Sham 1 gwvexntoz 2w g o@ A 0H...-

s E m U Q S N w April 1 mm;

DEEP WELL PUMP AND OPERATING MECHANISM THEREFOR Filed Nov. 13 1922 2 Sheets-Sheet 2 Fatented pr. l, 1924.

Kill

WILBUR N. SQUIRES, OF JOPLIN, MIS SO UBI.

DEEP-WELL PUMP AN'D OPERATING: MEC i' Application filed November 13, 1922. Serial No. 600,598.

T all whom it mayconccrn:

Be it known that I, WILBUR N. Sources, a citizen of the United States, residing at J oplin, in the county of Jasper and State of Missouri, have invented certain new and useful Improvements in Deep-Well Pumps and Operating Mechanism Therefor, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to improvements in deep well pumps and operating mechanism therefor.

An important object of the invention is to provi e in a deep wellpump pressure operated mechanism for actuating thepump piston which may be located within the well and which is practically operative. A further object of the invention is to provide an operating mechanism of this character which is readily installed and which may be readily removed and 'repaircd in event of failure in service.

A still further object of the invention is to provide a novel and improved pump piston construction for use in deep wells.

An additional object of the invention re sides in the construction and arrangement of the various parts hereinafter described whereby a compact, durable and eflicient pump and operating mechanism therefor are provided which are capable of ready insertion in the well.

These and other objects I attain by the construction and arrangement shown in the accompanying drawings wherein forthe purpose of illustration is shown a preferred embodiment of thy invention and wherein like reference characters designate like parts throughout.

In the drawingsz-- Figure 1 is a vertical sectional view taken through pumping apparatus constructed in accordance with my invention;

Figure 2 is a similar view taken at right angles to the view shown in Figure 1;

Figure 3 is an enlarged section on the line 3--3 of Figure 2;

Figure l is a vertical sectional view throu 11 one orthe three Way valves einploye Figure 5 is a second section "of the three way valve the view bein taken at right:

- angles to that shown in Figure 4;

Figure 6 is an enlarged sectional detail view showing the reduction gearing;

Figure 7 is an enlarged detail view of the pump cylinder and piston; and

Figure 8 is a section on the line 8-8 of Fi re 7.,

eferring now more particularly to the drawings, the numeral 10 designates what may be termed a retainer barrel, since it is eniplolyed for retaining in assembled relation t e various parts of the apparatus to be hereinafter described. Disposed within the upper end of the retainer barrel 10 is a pump barrel 11 having at its upper. and lower ends flanges 12 extending into engagement with the walls of the retainer barrel and secured therto in any suitable manner. The upper flange 12 of the pump barrel 11'. serves as a means of attachment for a head 13 embodyin a removable valve seat 1d. The head is urther provided with a supersttucture 15 forming a valve cage for a ball valve 16 adapted to coact with the seat and seat downwardly thereon. With this cage is connected a discharge pipe 17 by means of which the dischar e of the pump is conduct- W ed to the surface or disposal.

Within the barrel 11 of the pump operates a piston 18 com risin a main bo y section 19 having a sliding t in the bore of the barrel 11 and a lower or skirt portion 20 or" less diameter than the bore of the barrel 11 so that when projected into this bore there is a clearance between the upper face of the skirt and the adjacent face of the bore. The piston 18 is provided with a longitudinal bore 21 extending entirely therethrough, the upper end of which is in the form of a valve seat 22 which is preferably removable, as I illustrated, and which is adapted for the reception of a ball valve 23 closing the bore of t e piston during an upstroke thereoil The skirt 20 is longitudinally slotted, as indicated at 2%, affording openingsfor the passage of oil, water or the like during a downstroke of the piston and permitting the fluid to enter the bore 21 and ass through this bore upwardly into the liore of the barrel 11. The body portion 19 of the piston is preferably provided uponits exterior with expansible packing rings or piston rings 25 so as to insure a erfe/et seal thereof with the walls of this arrel. To the lower end of the skirt portion 20 is attached a downwardly extending piston rod 11 27 2 tainer barrel 10 is a cylinder 28 having closed ends and provided at each end thereof with a port 29. Through the upper closed end of the cylinder 28 extends the piston rod 30 of a piston 31 Operating within the cylinder and adapted to be reciprocated therein by means of an expansible fluid,.as will hereinafter be more fully set forth. To the upper end of the piston rod 30. is secured a cross head 32, the ends of which slidably engage with guides 33 secured to the walls of the retainer barrel 10 at the 0 posite sides thereof. These guides exten upwardly above [the upper limit of travel of the cross head 32 and serve at their upper ends as guides for a cross head 34 secured to the iston rod 27 of the pum piston. The cross ead 32 is connected wit the cross head 34 of the pump piston through reducing gearing by means of which the thrust and speed of the piston travel of the piston 31 are reduced, thereby preventing the formation of too great pressure within the system and consequent destruction of the conduits and mechanism employed. Furthermore, a short stroke ump has been found to be much more highly satisfactory. for use in deep oil wells than a long stroke, due to the fact that the long stroke variety has a tendency to leakage and the increase in the length of barrel increases the probability of scoring thereof and a large pressure loss durin the travel of the piston.

he reducing mechanism is divided into two sections, an upper or lifting section whereby the pump piston 27 is elevated and which is general y indicated at 35, and a lower section which may or may not be employed, as desired, for returnin the pump piston to lowered position and w ich is generall designated at 36. Itwill be understoo /by those familiar with the art that the weightof the pump piston,piston rod and cross head will in many instances prove suificient to return the piston 18 to its lowered osition upon relaxing of the strain d thereon by the, upper or elevating section 35-of the reducing gear. The re ducin gear may take any desired form which is found to be satisfactory for use within such a restricted s ace as is met with in oil wells of the usua construction. In the present instance the space employed for thehousing of the pump and operating mechanism therein as represented by the retainer barrel 10 is about five inches in diameter and consequently the necessity for elongating such reduction mechanism to thepleby' reduce the transverse width is met wit In the present instance I have shown as secured within the retainer barrel 1O immediately below the pump barrel 11 a bracket 37 which is stationary with relal ion to the retainer barrel 10 and which preferably forms a guide for the piston rod 27 of the means: 7

pump piston 18. To thisbracket I secure mountings 38 for pulleys 39 and 40, one of which is preferably arranged below and the other above the bracket 37. To the cross head 34 of the pump piston 27 I secure a bracket 38 in which is mounted a pulley 41. A flexible connecting element 42 has one end thereof secured to the cross head 34, as at 43, and is trained about the pulleys 39, 41 and 40 and has its free end secured to the cross head 32 of the piston rod 30 of the power piston 31, as indicated at 44. The pulley wheels 39, 4'0 and 41 may be of any desired construction but are preferably in the form of grooved wheels, such as more clearly shown in Figure 3 in which operates a metallic link belt or chain forming the flexible element 42, the periphery of the wheels being provided with a groove 45 receiving the belt. The mechanism represented by the parts 37 to 44 inclusive forms the upper or lifting portion 35 of the re- ,ducing gearing. I The lowering section of the reducing gearing consists in a support 46 secured to the walls of the retainer barrel 10 intermediate the cross heads 32 and 34 having extending upwardly therefrom a bracket 38 upon which is mounted a pulley 4T. Extending downwardly from the cross head 34 is a bracket 48 having mounted therein a pair of pulleys 49 and 50. "A flexible element similar to that previously described has one end thereof secured to the bracket 38*, as indicated at 51, and is trained about the pulleys 50, 47 and 49 and extends downwardly adjacent the upper head'of the cylinder 28 where it is trained about the pulley 52 mounted upon this head. The free 'end of the flexible element is secured to the cross head 32, as indicated at 53. An inspection of the drawings will render obvious the fact that the upper and lower reducing mechanism sections are exactly similar, each-consistin of a plurality of pulleys having a fleXib e element trained thereabout, which by its connections provides a given ratio of reduction, this ratio in the present instance being three to one. The means of connection illustrated at 53 is preferably in the form of anadjusting bolt by-means of which slack caused by stretching of the flexible elements or by wear upon the pulleys may be taken up. The retainer barrel 10 has formed inthe side walls thereof openings 10 to permit the passage ofoil into the same and these openings are preferably screened, as indicated at 54, these screenings being removable to permit access to the operating mechanism hereinbefore described.

The numeral 55 designates a fluid pressure feed pipe'preferably connected with a source of compressed air,'not herein shown, which extends upwardly. through openings formed in the flanges 12 of the pump barrel 11, and is provided immediately below the lower flange with a'T fitting 56 connected through an arcuate pipe 57 with a conduit 58 connecting with the port 29 at the lower end of the power cylinder 28.' The fitting is likewise provided with a conduit 59 extending downwardly in alignment with the feed pipe 55 and which connects with the port 29 at the upper end of the power cylinder 28. Arranged in theconduits 58 and 59 are three way valves 60, each having an operating stem 61 which extends adjacent a guide bracket 62 carried .by the cross head 34. Carried by each guide 62 is a pair of adjustable stop members 63 which are adjustable longitudinally of the guide 62 and adapted for alternate engagement with the corresponding operating handle 61 of port 67 and a valve body 68 having ports 69 and 70 formed therein. arranged at an angle to one another.

These ports are so arranged that when the port 69 connects the port 65 of the-body'with the port 67 there of, communication of the port 67 withthe port 66 is cut off. correspondingly, when the ports 67 and 66 are in connection, the

port 67 is closed for communication with the port 65. Each of the pipes or conduits 58 and 59 are formed in' two sections, the

upper section thereofengaging in the, port 65 ofits corresponding valve 60 and the lower section thereof engaging in the port 67 thereof. l/Vith the port 66 of each of these valves a discharge pipe 71 is connected, these discharge pipes being preferably connected and having the terminus thereof arranged at. a cons derable distance above the pump barrel 11.

The valves have thevalve bodies 68 thereof arranged at right angles to one another so that when the port 69of one of the valves is placing the ports and 67 thereof in communication, the port 70 of the other valves is placing the ports 66 and 67 thereof in communication, one valve being exhausting as the other intakes. It will be seen that upon fluid pressure being admitted through the pipe 55 and the piston being in the position-illustrated in Figure 1 this pressure will have access to the upper end of the cylinder through the right hand three way valve and the piston will accordingly be moved downwardly. Any

fluid below the piston will at the same time be discharged through the left hand pipe 58, passing out through the discharge pipe 71 and being discharged into the bore of the well. The piston 31 being moved downwardly, the pump piston is caused toascend and by its ascensionbrings into contact with the valve stems6l the lower stop member '63, causing these valve stems to.be shifted, reversing the connection of the ports and causing the fluid pressure to be introduced beneath the piston and the space above the piston to be connected with the exhaust.

It will, of course, be obvious that the construction of three way valve herein illustrated is capable of some'change and .modification, and it will furthermore be obvious that the various methods of connection and mounting of the various parts ofthe device may in many ways be altered ,without in any manner departing from the spirit of my .in- .vention and I accordingly do not limit myself to the specific arrangement hereinbe: fore set forth except as hereinafter claimed.

I claim a 1. Ina deep well pump,*a power piston,

a pumping piston, an operative connection het-weenthe pump and power pistons where by movement of thepower piston in onedirection causes corresponding movement of the pump piston in the opposite direction,

pump piston through a predetermined distance for reversing the'direction of movement of th power piston.

2. In a deep well pump, a power piston, a pumping piston, {inoperative connection between thepump and power pistons whereby movement of the piston in one direction causescorresponding movement of the pump piston 'lll the opposite direction, 'means operated by the movement of the pump piston through a predetermined distance for reversing the direction of movement of the power piston, including a power cylinder, intake and exhaust connectionstherefor, and stopv members connected with. the pump piston for travel therewith for controlling said intake, and exhaust connections. r

In a deep well pump, a pump piston, a power piston arranged below the pump piston, a reduction gearing connecting the power piston and pump piston for elevating the pump piston including a piston rod for the power piston, a piston rod for the pump piston, a l'iracket stationary with relation to the pump piston, pulleys carried by said bracket, a pulley carried by the piston rod of said pump, and a flexible element secured at one end to the pistonr'od of the power piston and trained about said pulleys and,

hnvingits free end secured to the piston rod of the pump piston. i

' -l-. In a deep well pump, a pump, an operating motor therefor, a flexible driving and means operated by the movement of the p 'l on connection between the operating motor and the pump, and means carried by the piston ot the pump controlling the operation of the a o eratin motor all ada ted for insertion 6 i P g p in the well 'asa unit.

' '5. In a deep well pump, a retainer casing adapted for disposal Tat'or adjacent the bottom of the well, a pump cylinder, a power cylinder arranged within the casing and maintained in fixed relation thereby, pistons within said cylindersand reduction gearing disposed within the retainer casing and connecting said pistons.

6. In a deep well pump, a retainer casing adapted for disposal at or adjacent the bottom of the well, a pump cylinder, a power -cylinder arranged Within the casing and maintained in fixed relation thereby, pistons within said cylinders, reduction gearing disposed within the retainer casing and connectlng said pistons, and means operating upon predetermined travel of the pump piston for reversing the direction of inove-.

mentor the power piston. I

'7. In a dee well pump, a retainer casing adapted for is osal at or adjacent the bot- ,tom of the we 1, a pump cylinder and a power cylinder arranged within the casing in the opposite ends of said power cylinder,

intake and exhaust pipes disposed within the retainer casing, a three way valve connected with each of said ports, a connection between each of the three way valves and the intake and exhaust pipes, said valves each embodying ports arranged at an angle to one another and adapted to alternately connect the ports with the intake and exhaust pipes, an

operating stem foreach of said valves, an

operating vconnection between the piston of the power cylinder and the piston of the pump cylinder, and means carried by the piston of the pump cylinder and coacting with the operating stems of said valves for reversing theposition of said Valves upon a predetermined travel of the pump piston in and maintained in fixed relation thereby,

pistons within said cylinders, ports .formed WILBUR N. SQUIRES. 

